Experimental determination of the anisotropic swelling and water sorption properties of chestnut wood


ŞAHİN H. T.

Wood Research, cilt.55, sa.1, ss.33-40, 2010 (SCI-Expanded, Scopus) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 55 Sayı: 1
  • Basım Tarihi: 2010
  • Dergi Adı: Wood Research
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.33-40
  • Anahtar Kelimeler: Activation energy, Cellulose, Chestnut, Extractives, Lignin, Swelling coefficient, Transverse direction, Water sorption
  • Isparta Uygulamalı Bilimler Üniversitesi Adresli: Hayır

Özet

It was realized that the swelling rate coefficients increases significantly with extractive free chestnut wood-water systems resulting the initiation of the swelling process displaced towards shorter times, had lowering activation energies (Ea). The Ea of unextracted and extracted free chestnut was found to be 38.4 and 19.5 kj.mol-1, respectively. The measured maximum water absorption for unextracted samples was ranged from 141.8 % at 23 °C to 161.0 % at 100 °C However, at similar temperature level, the further increased water absorption was realized for extracted samples. It ranged from 147.7 % at 23 °C to 179.1 % at 100 °C. These features could be mainly attributed to modify cell wall chemical components resulting in a greater ease of diffusion and increase potential sites for water molecules.